中国自20世纪60年代开始进行海洋油气资源的自营勘探和开发。（）

中国自20世纪60年代开始进行海洋油气资源的自营勘探和开发。（）

• A. Since the 1960s,China began to explore and exploit offshore oil and gas resources on its own.
• B.Beginning from the 1960s, China began to explore and exploit offshore oil and gas resources on its own.
• C.As early as the 1960s,China began to explore and exploit offshore oil and gas resources on its own.
• D.Until the 1960s, China began to explore and exploit offshore oil and gas resources on its own.